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                    Closing price on 4/26/2011
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                    | Open | 15.30 |  
                    | High | 15.30 |  
                    | Low | 14.50 |  
                    | Volume | 13,100 |  
                    | Split-adjusted Price | 1.70 |  
                
             | 
 |  NBC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 4/26/2011 | -0.70 / -4.58% | 15.30 | 15.30 | 14.50 | 14.60 | 14.67 | 1.70 | 13,100 |   |  
            | 4/25/2011 | +0.90 / +6.25% | 14.70 | 15.40 | 14.70 | 15.30 | 15.28 | 1.78 | 3,600 |   |  			
            | 4/22/2011 | -0.50 / -3.36% | 14.70 | 14.70 | 14.30 | 14.40 | 14.45 | 1.68 | 15,800 |   |  
            | 4/21/2011 | -1.10 / -6.88% | 15.10 | 15.10 | 14.70 | 14.90 | 14.74 | 1.74 | 55,800 |   |  			
            | 4/20/2011 | +0.50 / +3.23% | 15.60 | 16.00 | 15.60 | 16.00 | 15.74 | 1.86 | 800 |   |  
            | 4/19/2011 | -0.30 / -1.90% | 15.50 | 15.70 | 15.40 | 15.50 | 15.53 | 1.81 | 18,200 |   |  			
            | 4/18/2011 | -0.60 / -3.66% | 16.40 | 16.40 | 15.80 | 15.80 | 16.02 | 1.84 | 46,800 |   |  
            | 4/15/2011 | -0.50 / -2.96% | 16.80 | 16.80 | 16.40 | 16.40 | 16.52 | 1.91 | 15,700 |   |  			
            | 4/14/2011 | -0.50 / -2.87% | 17.60 | 17.60 | 16.90 | 16.90 | 17.11 | 1.97 | 28,900 |   |  
            | 4/13/2011 | 0.00 / 0.00% | 18.40 | 18.40 | 17.40 | 17.40 | 17.59 | 2.03 | 1,600 |   |  			
            | 4/8/2011 | -0.50 / -2.79% | 17.90 | 17.90 | 17.40 | 17.40 | 17.52 | 2.03 | 9,700 |   |  
            | 4/7/2011 | 0.00 / 0.00% | 18.00 | 18.00 | 17.60 | 17.90 | 17.93 | 2.09 | 9,100 |   |  			
            | 4/6/2011 | +0.30 / +1.70% | 18.30 | 18.30 | 17.70 | 17.90 | 17.84 | 2.09 | 5,300 |   |  
            | 4/5/2011 | 0.00 / 0.00% | 17.40 | 17.60 | 17.20 | 17.60 | 17.33 | 2.05 | 6,200 |   |  			
            | 4/4/2011 | +0.20 / +1.15% | 17.40 | 17.60 | 17.30 | 17.60 | 17.37 | 2.05 | 6,100 |   |  
            | 4/1/2011 | -0.30 / -1.69% | 17.90 | 17.90 | 17.40 | 17.40 | 17.70 | 2.03 | 700 |   |  			
            | 3/31/2011 | +0.70 / +4.12% | 17.90 | 17.90 | 17.30 | 17.70 | 17.55 | 2.06 | 11,000 |   |  
            | 3/30/2011 | -0.90 / -5.03% | 17.60 | 17.80 | 17.00 | 17.00 | 17.60 | 1.98 | 17,000 |   |  			
            | 3/29/2011 | -0.70 / -3.76% | 18.50 | 18.50 | 17.50 | 17.90 | 17.75 | 2.09 | 75,500 |   |  
            | 3/28/2011 | -0.50 / -2.62% | 19.30 | 19.30 | 18.50 | 18.60 | 18.77 | 2.17 | 11,900 |   |  			
            | 3/25/2011 | -0.30 / -1.55% | 19.50 | 20.00 | 19.10 | 19.10 | 19.31 | 2.23 | 16,200 |   |  
            | 3/24/2011 | -0.80 / -3.96% | 20.40 | 20.40 | 19.40 | 19.40 | 19.86 | 2.26 | 59,300 |   |  			
            | 3/23/2011 | -17.40 / -46.28% | 20.20 | 20.20 | 19.70 | 20.20 | 20.18 | 2.35 | 98,200 |   |  
            | 3/22/2011 | +0.10 / +0.27% | 39.00 | 39.00 | 37.40 | 37.60 | 37.76 | 2.19 | 42,200 |   |  			
            | 3/21/2011 | +0.50 / +1.35% | 37.50 | 38.80 | 37.20 | 37.50 | 37.85 | 2.18 | 55,900 |   |  
            | 3/18/2011 | +0.60 / +1.65% | 37.00 | 39.00 | 36.20 | 37.00 | 36.77 | 2.16 | 64,800 |   |  			
            | 3/17/2011 | +0.30 / +0.83% | 36.50 | 37.00 | 36.00 | 36.40 | 36.55 | 2.12 | 19,600 |   |  
            | 3/16/2011 | +0.50 / +1.40% | 36.10 | 36.90 | 36.00 | 36.10 | 36.45 | 2.10 | 18,800 |   |  			
            | 3/15/2011 | +0.30 / +0.85% | 36.20 | 36.40 | 35.50 | 35.60 | 35.96 | 2.07 | 18,100 |   |  
            | 3/14/2011 | -2.20 / -5.87% | 37.80 | 37.80 | 35.30 | 35.30 | 36.44 | 2.06 | 35,900 |   |  |